asp.net采集函数（采集、分析、替换、入库一体）

来源：互联网发布：mysql 分段统计编辑：程序博客网时间：2024/04/29 11:44

using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using MSXML2; using System.Text.RegularExpressions; namespace EC { /// /// 远程文件抓取类 /// public class GetRemoteObj { #region 构造与析构函数 public GetRemoteObj() { // // TODO: 在此处添加构造函数逻辑 // } ~GetRemoteObj() { Dispose(); } #endregion #region IDisposable 成员 public void Dispose() { GC.SuppressFinalize(this); } #endregion #region 日期随机函数 /********************************** * 函数名称:DateRndName * 功能说明:日期随机函数 * 参数:ra:随机数 * 调用示例: * GetRemoteObj o = new GetRemoteObj(); * Random ra = new Random(); * string s = o.DateRndName(ra); * Response.Write(s); * o.Dispose(); * ********************************/ /// /// 日期随机函数 /// /// 随机数 /// public string DateRndName(Random ra) { DateTime d = DateTime.Now; string s = null, y, m, dd, h, mm, ss; y = d.Year.ToString(); m = d.Month.ToString(); if (m.Length < 2) m = "0" + m; dd = d.Day.ToString(); if (dd.Length < 2) dd = "0" + dd; h = d.Hour.ToString(); if (h.Length < 2) h = "0" + h; mm = d.Minute.ToString(); if (mm.Length < 2) mm = "0" + mm; ss = d.Second.ToString(); if (ss.Length < 2) ss = "0" + ss; s += y + m + dd + h + mm + ss; s += ra.Next(100, 999).ToString(); return s; } #endregion #region 取得文件后缀 /********************************** * 函数名称:GetFileExtends * 功能说明:取得文件后缀 * 参数:filename:文件名称 * 调用示例: * GetRemoteObj o = new GetRemoteObj(); * string url = @"http://www.baidu.com/img/logo.gif"; * string s = o.GetFileExtends(url); * Response.Write(s); * o.Dispose(); * ********************************/ /// /// 取得文件后缀 /// /// 文件名称 /// public string GetFileExtends(string filename) { string ext = null; if (filename.IndexOf('.') > 0) { string[] fs = filename.Split('.'); ext = fs[fs.Length - 1]; } return ext; } #endregion #region 获取远程文件源代码 /********************************** * 函数名称:GetRemoteHtmlCode * 功能说明:获取远程文件源代码 * 参数:Url:远程url * 调用示例: * GetRemoteObj o = new GetRemoteObj(); * string url = @"http://www.baidu.com"; * string s = o.GetRemoteHtmlCode(url); * Response.Write(s); * o.Dispose(); * ********************************/ /// /// 获取远程文件源代码 /// /// 远程url /// public string GetRemoteHtmlCode(string Url) { string s = ""; MSXML2.XMLHTTP _xmlhttp = new MSXML2.XMLHTTPClass(); _xmlhttp.open("GET", Url, false, null, null); _xmlhttp.send(""); if (_xmlhttp.readyState == 4) { s = System.Text.Encoding.Default.GetString((byte[])_xmlhttp.responseBody); } return s; } #endregion #region 保存远程文件 /********************************** * 函数名称：RemoteSave * 功能说明：保存远程文件 * 参数：Url:远程url;Path:保存到的路径 * 调用示例: * GetRemoteObj o = new GetRemoteObj(); * string s = ""; * string url = @"http://www.baidu.com/img/logo.gif"; * string path =Server.MapPath("Html/"); * s = o.RemoteSave(url,path); * Response.Write(s); * o.Dispose(); * ******************************/ /// /// 保存远程文件 /// /// 远程url /// 保存到的路径 /// public string RemoteSave(string Url, string Path) { Random ra = new Random(); string StringFileName = DateRndName(ra) + "." + GetFileExtends(Url); string StringFilePath = Path + StringFileName; MSXML2.XMLHTTP _xmlhttp = new MSXML2.XMLHTTPClass(); _xmlhttp.open("GET", Url, false, null, null); _xmlhttp.send(""); if (_xmlhttp.readyState == 4) { if (System.IO.File.Exists(StringFilePath)) System.IO.File.Delete(StringFilePath); System.IO.FileStream fs = new System.IO.FileStream(StringFilePath, System.IO.FileMode.CreateNew); System.IO.BinaryWriter w = new System.IO.BinaryWriter(fs); w.Write((byte[])_xmlhttp.responseBody); w.Close(); fs.Close(); } else throw new Exception(_xmlhttp.statusText); return StringFileName; } #endregion #region 替换网页中的换行和引号 /********************************** * 函数名称:ReplaceEnter * 功能说明:替换网页中的换行和引号 * 参数:HtmlCode:html源代码 * 调用示例: * GetRemoteObj o = new GetRemoteObj(); * string Url = @"http://www.baidu.com"; * strion HtmlCode = o.GetRemoteHtmlCode(Url); * string s = o.ReplaceEnter(HtmlCode); * Response.Write(s); * o.Dispose(); * ********************************/ /// /// 替换网页中的换行和引号 /// /// HTML源代码 /// public string ReplaceEnter(string HtmlCode) { string s = ""; if (HtmlCode == null || HtmlCode == "") s = ""; else s = HtmlCode.Replace("/"", ""); s = s.Replace("/r/n", ""); return s; } #endregion #region 执行正则提取出值 /********************************** * 函数名称:GetRegValue * 功能说明:执行正则提取出值 * 参数:HtmlCode:html源代码 * 调用示例: * GetRemoteObj o = new GetRemoteObj(); * string Url = @"http://www.baidu.com"; * strion HtmlCode = o.GetRemoteHtmlCode(Url); * string s = o.ReplaceEnter(HtmlCode); * string Reg=""; * string GetValue=o.GetRegValue(Reg,HtmlCode) * Response.Write(GetValue); * o.Dispose(); * ********************************/ /// /// 执行正则提取出值 /// /// 正则表达式 /// HtmlCode源代码 /// public string GetRegValue(string RegexString, string RemoteStr) { string MatchVale = ""; Regex r = new Regex(RegexString); Match m = r.Match(RemoteStr); if (m.Success) { MatchVale = m.Value; } return MatchVale; } #endregion #region 替换HTML源代码 /********************************** * 函数名称:RemoveHTML * 功能说明:替换HTML源代码 * 参数:HtmlCode:html源代码 * 调用示例: * GetRemoteObj o = new GetRemoteObj(); * string Url = @"http://www.baidu.com"; * strion HtmlCode = o.GetRemoteHtmlCode(Url); * string s = o.ReplaceEnter(HtmlCode); * string Reg=""; * string GetValue=o.GetRegValue(Reg,HtmlCode) * Response.Write(GetValue); * o.Dispose(); * ********************************/ /// /// 替换HTML源代码 /// /// html源代码 /// public string RemoveHTML(string HtmlCode) { string MatchVale = HtmlCode; foreach (Match s in Regex.Matches(HtmlCode, "<.+?>")) { MatchVale = MatchVale.Replace(s.Value, ""); } return MatchVale; } #endregion #region 匹配页面的链接 /********************************** * 函数名称:GetHref * 功能说明:匹配页面的链接 * 参数:HtmlCode:html源代码 * 调用示例: * GetRemoteObj o = new GetRemoteObj(); * string Url = @"http://www.baidu.com"; * strion HtmlCode = o.GetRemoteHtmlCode(Url); * string s = o.GetHref(HtmlCode); * Response.Write(s); * o.Dispose(); * ********************************/ /// /// 获取页面的链接正则 /// /// /// public string GetHref(string HtmlCode) { string MatchVale = ""; string Reg = @"(h|H)(r|R)(e|E)(f|F) *= *('|"")?((/w|//|//|/.|:|-|_)+)('|""| *|>)?"; foreach (Match m in Regex.Matches(HtmlCode, Reg)) { MatchVale += (m.Value).ToLower().Replace("href=", "").Trim() + "||"; } return MatchVale; } #endregion #region 匹配页面的图片地址 /********************************** * 函数名称:GetImgSrc * 功能说明:匹配页面的图片地址 * 参数:HtmlCode:html源代码;imgHttp:要补充的http.当比如:则要补充http://www.baidu.com/,当包含http信息时,则可以为空 * 调用示例: * GetRemoteObj o = new GetRemoteObj(); * string Url = @"http://www.baidu.com"; * strion HtmlCode = o.GetRemoteHtmlCode(Url); * string s = o.GetImgSrc(HtmlCode,"http://www.baidu.com/"); * Response.Write(s); * o.Dispose(); * ********************************/ /// /// 匹配页面的图片地址 /// /// /// 要补充的http://路径信息 /// public string GetImgSrc(string HtmlCode, string imgHttp) { string MatchVale = ""; string Reg = @""; foreach (Match m in Regex.Matches(HtmlCode, Reg)) { MatchVale += GetImg((m.Value).ToLower().Trim(), imgHttp) + "||"; } return MatchVale; } /// /// 匹配中的图片路径实际链接 /// /// 字符串 /// public string GetImg(string ImgString, string imgHttp) { string MatchVale = ""; string Reg = @"src=.+/.(bmp|jpg|gif|png|)"; foreach (Match m in Regex.Matches(ImgString.ToLower(), Reg)) { MatchVale += (m.Value).ToLower().Trim().Replace("src=", ""); } return (imgHttp + MatchVale); } #endregion #region 替换通过正则获取字符串所带的正则首尾匹配字符串 /********************************** * 函数名称:GetHref * 功能说明:匹配页面的链接 * 参数:HtmlCode:html源代码 * 调用示例: * GetRemoteObj o = new GetRemoteObj(); * string Url = @"http://www.baidu.com"; * strion HtmlCode = o.GetRemoteHtmlCode(Url); * string s = o.RegReplace(HtmlCode,""); * Response.Write(s); * o.Dispose(); * ********************************/ /// /// 替换通过正则获取字符串所带的正则首尾匹配字符串 /// /// 要替换的值 /// 正则匹配的首字符串 /// 正则匹配的尾字符串 /// public string RegReplace(string RegValue, string regStart, string regEnd) { string s = RegValue; if (RegValue != "" && RegValue != null) { if (regStart != "" && regStart != null) { s = s.Replace(regStart, ""); } if (regEnd != "" && regEnd != null) { s = s.Replace(regEnd, ""); } } return s; } #endregion } }